version update

Author: KMilej

README.md

@@ -225,7 +225,7 @@ curl -X GET http://localhost:8080/approov-state       # check current state
 **Environments where the quickstart was tested:**
 ```text
 * Runtime: Node.js v25.2.1
-* Framework: Koa 5.2.1
+* Framework: Express 5.2.1
 * Build Tool: npm 11.6.2
 ```